Work support



W. F. GROENE.

WORK SUPPORT.

APPLICATION FILED MAY 13, I920- Patented Jan. 31, 192 2.

2 SHEETS-SHEET l.

W. F. GROENE.

WORK'SUPFO'RT. APPLICATION FILED MAY 13, 1920.

1,405,206. Patented Jan. 31,1922.

2 SHEETS-SHEET 2.

7 WILLIAM F. GBO'ENE, on QINGINNATIQ'f'OI-IIO l ssmnon TOHTI-IE 3, 1 3mm 1- ;w MAGHINETOOL CO PA Y, oE oINo NNAT oH d A CORPORATION OF OHIO.

and resident of Cincinnati, in the'iieounty of Hamilton: and State/jot have invented a' new and" useful Improvement 'Workfl s tl eof ie h f l wi g-i sp fication. 1 ht M v U; object of iny in'ventionis' to provide means whereby fine adjustmentsof t'hesu'p pe may Obtaine -J vAn t r jct s to proyide a"supp ort that can be easily endspee'dily thrown inor out ofiposition.

Another object is to provide an adjustable support that will not offer lodgrnent to dirt and permit" its accumulation therein. An-

' other object is to" provide a support in which Fig. v V My?! therewli'llj be nodong'itudineil play. I n h v 'Theseend other objects are attained by the means described herein and disclosed in the accompanying drawings in which: n h Fig. l isien end yiew offa lathevbed, carriage and work supportjembodying my invention, parts'of the support being in sec- Fig. 2 is a front elevationof a support embodying my invention, the tool rest being removed, i Fig. 3 is a sectionel View on irregular line 3 3 of Fig. 1. Y tie t e el view el n 4+4. of

meet

eveneo te essa "restleliheving The rest is adjustablyrnounted on aslide The rest and" slidea're movedabout the pivota l connections f byjm eans of a crank shaft E'towhich the slide is'piyoted." The crank shaftis operated by ruea' ns ofthe bevel -gears e and'eop e'ratedby the shafte and crank '6 vRollers 0, and (Z on the rest and block or thrust member D engage and'support the work end may be thrown in end out of engagement with the work theimanipula tion of'the crank 6*. v

" The rest A has, atits 'loweiflerid, the arins l pi ot lyia ech dr o t j g y Ineansof piv ot's a v the rear of the rest s m d e l 'i i iel a? n wh dl h sl d f Bli s en drir es e B d re t A are adapted to besecurely'ettached'to one another by means of bolts a and a? extendingf;transversely through the upper" and lower ends of rest'A through slots inthe slide 1 The bolts a a have wits mealtime meri s,

{I tQfwoItK sUPPoRiL p imief-Lett rsPatent? Patented tum-31, 1 922.

swan and'al respectively; On therearof the restis' a hut a thatilis 'engatgedi by a ibol t bf attached to the slide," (see Fig.113); O nvthe front of'the rest isformed a fl ange a secured to the flange are pletes a ar and rotatz bly mounted between them, and ex tending forwerdly. eyeeauiem is it roller ai Nea fltheupper front edge of the flange is formed'e wey afi (see Fighl) inwhich'the block Diis mounted The block Df is e11 gaged at its upper end by the ser'ew bolt a extending through the rest A. i

The slide is yadebtdito be' retained within the'fwaya and to b reei rq'e ted longitudinally therein. The slide 131 is,' "it its lower end pi-voted by stud b to linkZi .Y A

cap I)? secured to link t embraces stud of crank shaft E. A pivot 72? on the lower'end of theslidelis engagedlby the bolt/" Lu} 75 t brication of stud bis inade by the duct b Longitudinal slots 6 and? are formed through'the slide through which the bol s a endfa respeetivelyextend. A hole bf in the slide ,aiccomrnddatesthe threedednut a. A screw 6 extends "through the slide from itsnpper edge-Z77 0, fitnd into theliole b where"'it engages the threaded nut a Aycollarfb?" secured to the scr'ew't permits the screws' rotation "but preyents its s'epe'rar v I l V i Th lqe n YD i a p ed o b rec pr catedjlongitudina lly in thefey a? by means of the screw d sengaging in the end ofthe blocki" 1 collar a t secured to the screw a permits the screwto-niove the block without dislodgring the l screw.; Thei screw bolt (1 extending through} the longitudinal slot fol inthe block enga'g esin the rest A roller anddffornmd on the 'block D'. k

{The crank sheft E is mount d inblo'ck' F supported onthe bracket G. i The stud teen (His rotatably secured between the jawsd gages'the 'slid'BQ bevel gees e1 inounted on" the crankshaft isengagedby the bevel 1 gearje fcarriedby shaft 63'. The crank'ef I is'attech'edjto shaft 6 Housing 65 covers 6 bevel geai e ing through, h le f" the blo k F; The 119 Block is belted tei' heiearriage tethered flat gib f is attached to the base of 'the'blolck and 'movesover the b'racketiG with 05 lower end of hole f is tapered. A self aligning tapering collar f seats upon thelo'wer endioftheihole'f Lock nuts f and. f per-. mit variation of the positions. oft-collar The bracket G, bolted to the lathe bed, supports the block F and gib f.

Work H (Fig. 1) is heldbetween the head and tail stockof the lathe. h is the'cutting tool held in tool rest h on the carriage C.

The operation of the device is as follows:

,After. the device has been. adjusted for Work ofa certain character, lt'is ,111 condltion for useon all of this work. The rest A liQg8tl1Gl,.Wlth block D are'revo'lved about the pivotsathrowing therollers afandd into or out of engagement with the work by av few turns ofthe crank 6 :The crank-0 rev volves the crank shaft E that :moves the slideB up or down, thereby .turning' therest A, about pivots m The, bolt f operates upon the rest-in a manner that will bC GX plained threafter.

I will now describe the vmethod employed in adjusting the device preparatory to proceeding with alot of vwork. of ,a ,eertain character. 7 I I L The work H- is secured .in the lathe be tween the head and tail stocks. The'eutting tool his moved up to: engage thework. VBy means of crank 6 andthe bevelgeare the bevel gear 6 together with the crank shaft thereby bolting rest A and slideB-together.

lock nuts f and f are then adjusted so as to seat the collar f in the tapered hole f andtake up anyplav between the slide and crank shaft. 'Bolt d is then loosened andby means of screw a the block D ismoved toward: the work untilfrollerd engages the work. The bolt d is then tightened and ;thrust;member D bolted to'rest A. From this description it is apparent that the rollers can be moved to various contacts with the worlgsupporting the work at variouspoints in relation to the 'cuttingtooL =The device moves with the carriage, thereby giving support at these relative points; at alltimes. By means of tapered gib any play between the block F and bracket G can be taken up. The thrust of the cutting toolis thereby directed against the bed jofgthe lathe The support is'adjusted for alot of work, and..t hen is utilized-in the manner previously,explained. The crank 6 is turned in a clockwise direc- ,tion-to move the rest A into engagement with the work H. The bolt f? limitsthe extent to whi'chthe rest, canmove toward the work, thereby assuring the same relation between the parts of the device and the piece 10f "work, a andalso binds i the link B v and crank. shaftjsE, when theffOICG-b'f the; thrust of the cutting tool, operating upon the stud -baha tending to move the rest backward,

tends to further move the link 6 and crankshaft 'E in a clockwise directionfiIn prac= tice this binclingforce has been found'to be so great that the adjustable lug f was placed upon the block F andthe boss 6 111 011. the

bevel gear 1 e? to further resist the clockwise tendency of 1 the, link, b}; k and crankshaft E, due to thethrust of ,thetool. The slot 7 in theblolck F permits adjustment, of the; lug/' Having thusdescribed my invention'ewhat I claim we Iiln an adjustable work supportflfor" l'athes, the combination witlna restadapted to adj ustably, or engage the work, of a. slide pivotally mounted on the carriage engaging the rest and adapted tocontrol'the rest, and

mechanism for operating; the slide,. adapted to be moved along the work in runisonlwith the carriage s w 5 1 f 2. In ,an adjustable vfwork -snp1:)ort for lathes the combination [with a rest, pivots connecting the, rest to, the. carriage away vformed in the rest, anda roller moun ed-on ,the ,restadapted to engage ;the;57vork, of L an adjustable block having. alroller: adapted to engage v the i work, a slide j engaging in tthe way in the rest, means to, adjust the .rest on the slide, a bracket {mounted on the bed a block mounted on the bracket, a crank shaft supported ,the" black ,and engaging :the slide and beingl'adaptedto rotatethe slide and rest about the pivots connecting the rest and the, ,carriage,,. and ;means, to revolver-the crankshaft. v i v 7 In an adjustable .work support :for lathes the combination of a slide, a -crank shaft pivotally connected with, the ,slide, a bracket attachedtto the bed, a block slidably mounted on the bracket and, supporting the crank shaft, 3 means to rotate -the crank shaft, means to limit. suchrotation a of the crank shaft arest; pivotally attached tothe carriage land adjustablyhengaging the slide, a

block adjustablyengaging the rest and ;'rollers on ,theblock and the rest adapted to engage the :work.

7 ,4. 111.1311 adjustable worksupport for lathes, the (:Ombinabionofa slide, a crank shaft, a link engaging the, crank shaft,;a pivot. connectlngmthe link, andthe slide a bracket. attachedto theb ed, ablock slidably .mounted on thebracket, and :supportingthe crank shaft v means adj ustably adapted to take-np ;.play:;between ;.the block andgthe bracket, .means; to rotate ,the crank shaft,

means adapted to limit the rotationoffthe and the rest adapted to engage the work.

5. In an adjustable work support for lathes the combination of a bracket attached to the bed, a block, having a bore forming a seat, slidably mounted on the bracket, a crank shaft mounted 011 theblock, a gear on the crank shaft, a crank, a shaft attached to on the bed, a block slidably mounted on the bracket, a crank shaft mounted on the block,

a link engaging the crank shaft, a slide pivotally attached to the crank shaft, a rest having a way formed in it adapted to accommodate the slide and to permit the slide'to reciprocate therein and comprising arms, pivots connecting the arms to the carriage, means to lock the'rest to the slide, and a roller adapted to engage the work, and a block adj ustably mounted on the rest having a bearing adapted to engage the work.

7. In an adjustable work support for lathes, the combination with a rest adapted to engage the work, of a block, a crank shaft mounted on the block, a link mounted onthe crank shaft,'a pivot connecting the link to the rest, means to revolve the crank shaft and to move the rest'into engagement with the WOIk, and. an adjustable bolt adapted to bind the rest to the block thereby prevent ing continued rotation of the crank shaft due to the thrust upon-the link and the pivot.

8. In a work support for lathes the combination of a rest pivotally mounted on the carriage adapted to engage the work, a slide pivotally mounted on the carriage controlling the rest, and means to control the slide.

9. In a work support for lathes the combi nation of arest pivotally mounted on the, lathe adapted to engage the work, a slide pivotally mounted on the lathe controlling the rest, and means to move the rest and slide about their pivotal mountings whereby,

the restis moved in and out of engagement with the work.

10. In a work support for lathes the combination of a rest adapted to engage the work, a slide engaging the rest and being capable of movement longitudinal of itself, a pivot mounting one end of the slide upon the lathe, a second pivot spaced from the first mentioned pivot and mounting the rest upon the lathe, means to actuate the slide about its pivotal mounting, whereby the slide is moved longitudinally over the rest, thereby moving the rest into and from engagement with the work, and means controlling the movement of the slide.

In witness whereof, I have 'hereuntosubscribed my name this 8th day of May, 1920.

WILLIAM F. GROENE. 

